Digital color correction system and method

Facsimile and static presentation processing – Natural color facsimile – Color photography previewer

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358448, 358500, H04N 170

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active

052550834

ABSTRACT:
A digital color correction system and method provide for color correction in a film-to-video signal conversion system. Film color correction is done by correcting incoming digitized film color signals (e.g. red, green and blue) according to film color correction parameters which represent film characteristics, such as film speed, gamma, and minimum and maximum film dye density. The film color correction parameters are used to sensitometrically convert the film color signals to video color signals according to a sensitometric film model, such as the Hurter-Driffield ("HD") characteristic curve. Video color correction is then performed upon the corrected film color signals according to video color correction parameters which represent video signal characteristics, such as hue and saturation, as well as a video color standard model, such as SMPTE 240M. Alternatively, separate signals representing the film or video color correction parameters can be encoded as separate data into the corrected or uncorrected color signals. This color correction or color correction parameter encoding can be done on a field-by-field, frame-by-frame or scene-by-scene basis, so that each resulting video field, frame or scene, respectively, is appropriately color corrected or contains its own specific color correction information.

REFERENCES:
patent: 4096523 (1978-06-01), Belmares-Sarabia et al.
patent: 4272780 (1981-06-01), Belmares-Sarabia et al.
patent: 4410908 (1983-10-01), Belmares-Sarabia et al.
patent: 4418358 (1983-11-01), Poetsch et al.
patent: 4642682 (1987-02-01), Orsburn et al.
patent: 4679067 (1987-07-01), Belmares-Sarabia et al.
patent: 4694329 (1987-09-01), Belmares-Sarabia et al.
patent: 4750050 (1988-06-01), Belmares-Sarabia et al.
patent: 4763186 (1988-08-01), Belmares-Sarabia et al.
patent: 4782390 (1988-11-01), Hayashi et al.
patent: 4811084 (1989-03-01), Belmares-Sarabia et al.
patent: 4823184 (1989-04-01), Belmares-Sarabia et al.
patent: 4857994 (1989-08-01), Belmares-Sarabia et al.
patent: 4862251 (1989-08-01), Belmares-Sarabia et al.
patent: 4866511 (1989-09-01), Belmares-Sarabia et al.
patent: 4907071 (1990-03-01), Belmares-Sarabia et al.
K. Staes, "Masking in the film-telecine system," the BKSTS Journal, Dec. 1977, pp. 354-360.
A. E. S. Green and R. D. McPeters, "New Analytic Expressions of Photographic Characteristic Curves," Applied Optics, vol. 14, No. 2, Feb. 1975, pp. 271-272.
L. J. D'Luna, K. A. Parulski, D. C. Maslyn, M. A. Hadley, T. J. Kenney, R. H. Hibbard, R. M. Guidash, P. P. Lee, and C. N. Anagnostopoulos, "A Digital Video Signal Post-Processor For Color Image Sensors," Proceedings of IEEE 1989 Custom Integrated Circuits Conference, pp. 24.2.1-24-2.4.

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